Long-wave ultraviolet (UV) and white-light illumination of lesions associated with white-nose syndrome. Wing from dead Tri-colored bat (Perimyotis subflavus) lit from above with hand-held 51 LED 385-nm UV flashlight shows points of orange–yellow fluorescence.
Does White-nose Syndrome pose a risk to human health?
Thousands of people have visited affected caves and mines since White-nose Syndrome (WNS) was first observed, and there have been no reported human illnesses attributable to WNS. We are still learning about WNS, but we know of no risk to humans from contact with WNS-affected bats. However, we urge taking precautions and not exposing yourself to WNS. Biologists and researchers use protective clothing when entering caves or handling bats.
Learn more: USGS NWHC White-Nose Syndrome
Related
Are bats dangerous?
What should I do if I find dead or dying bats, or if I observe bats with signs of White-nose Syndrome?
What species of bats are affected by White-nose Syndrome?
Where do bats live?
What is White-nose Syndrome?

Long-wave ultraviolet (UV) and white-light illumination of lesions associated with white-nose syndrome. Wing from dead Tri-colored bat (Perimyotis subflavus) lit from above with hand-held 51 LED 385-nm UV flashlight shows points of orange–yellow fluorescence.
Long-wave ultraviolet (UV) and white-light illumination of lesions associated with white-nose syndrome. Points of orange–yellow fluorescence (arrows) detected on a roosting Indiana myotis (Myotis sodalis) following surface illumination with a field-portable 9-watt 368-nm fluorescent UV light (photo by Tina Cheng with permission).
Long-wave ultraviolet (UV) and white-light illumination of lesions associated with white-nose syndrome. Points of orange–yellow fluorescence (arrows) detected on a roosting Indiana myotis (Myotis sodalis) following surface illumination with a field-portable 9-watt 368-nm fluorescent UV light (photo by Tina Cheng with permission).
Hibernating little brown bat with white muzzle typical of White-nose syndrome.
Hibernating little brown bat with white muzzle typical of White-nose syndrome.

Since first discovered in 2007 in New York, white-nose syndrome has spread to 16 states, including Virginia and Maryland, and four Canadian provinces. The disease is estimated to have killed over five million hibernating bats.
Since first discovered in 2007 in New York, white-nose syndrome has spread to 16 states, including Virginia and Maryland, and four Canadian provinces. The disease is estimated to have killed over five million hibernating bats.
Insect-eating bats provide pest-control services that save the U.S. agriculture industry over $3 billion per year, according to a study released today in the journal Science. However, scientists with the U.S.
Insect-eating bats provide pest-control services that save the U.S. agriculture industry over $3 billion per year, according to a study released today in the journal Science. However, scientists with the U.S.
Bats showing signs of infections with Pseudogymnoascus destructans, the fungus that causes white-nose syndrome.
Bats showing signs of infections with Pseudogymnoascus destructans, the fungus that causes white-nose syndrome.
Bats die prematurely when affected by white-nose syndrome.
Bats die prematurely when affected by white-nose syndrome.
White-Nose Syndrome Diagnostic Laboratory Network handbook
U.S. Geological Survey response to white-nose syndrome in bats
Information to prevent human exposure to disease agents associated with wildlife—U.S. Geological Survey circulars on zoonotic disease
White-nose syndrome in North American bats - U.S. Geological Survey updates
Related
Are bats dangerous?
What should I do if I find dead or dying bats, or if I observe bats with signs of White-nose Syndrome?
What species of bats are affected by White-nose Syndrome?
Where do bats live?
What is White-nose Syndrome?

Long-wave ultraviolet (UV) and white-light illumination of lesions associated with white-nose syndrome. Wing from dead Tri-colored bat (Perimyotis subflavus) lit from above with hand-held 51 LED 385-nm UV flashlight shows points of orange–yellow fluorescence.
Long-wave ultraviolet (UV) and white-light illumination of lesions associated with white-nose syndrome. Wing from dead Tri-colored bat (Perimyotis subflavus) lit from above with hand-held 51 LED 385-nm UV flashlight shows points of orange–yellow fluorescence.
Long-wave ultraviolet (UV) and white-light illumination of lesions associated with white-nose syndrome. Points of orange–yellow fluorescence (arrows) detected on a roosting Indiana myotis (Myotis sodalis) following surface illumination with a field-portable 9-watt 368-nm fluorescent UV light (photo by Tina Cheng with permission).
Long-wave ultraviolet (UV) and white-light illumination of lesions associated with white-nose syndrome. Points of orange–yellow fluorescence (arrows) detected on a roosting Indiana myotis (Myotis sodalis) following surface illumination with a field-portable 9-watt 368-nm fluorescent UV light (photo by Tina Cheng with permission).
Hibernating little brown bat with white muzzle typical of White-nose syndrome.
Hibernating little brown bat with white muzzle typical of White-nose syndrome.

Since first discovered in 2007 in New York, white-nose syndrome has spread to 16 states, including Virginia and Maryland, and four Canadian provinces. The disease is estimated to have killed over five million hibernating bats.
Since first discovered in 2007 in New York, white-nose syndrome has spread to 16 states, including Virginia and Maryland, and four Canadian provinces. The disease is estimated to have killed over five million hibernating bats.
Insect-eating bats provide pest-control services that save the U.S. agriculture industry over $3 billion per year, according to a study released today in the journal Science. However, scientists with the U.S.
Insect-eating bats provide pest-control services that save the U.S. agriculture industry over $3 billion per year, according to a study released today in the journal Science. However, scientists with the U.S.
Bats showing signs of infections with Pseudogymnoascus destructans, the fungus that causes white-nose syndrome.
Bats showing signs of infections with Pseudogymnoascus destructans, the fungus that causes white-nose syndrome.
Bats die prematurely when affected by white-nose syndrome.
Bats die prematurely when affected by white-nose syndrome.